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' .Cooking .Stove. N0. 80,636. Patented "Aug.'4,1868.

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WILLOUGHBY F. KISTLER, OF CHICAGO, ILLINOIS, ASSIGNOR TO HIMSELF AND GEORGE W. GILLETT.

Letters Patent No. 80,636, dated August 4, 1868.

IMPROVEMEN'I' IN OOOKING-STOVES.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, WILLOUGHBY F. KISTLER, of Chicago, in the county of Cook, and State of Illinois, have invented a new and useful Improvement in Stoves; and I do hereby declare and make known" that the following is a. full, clear, and exact description of the same, reference being had to the accompanying drawings, and the letters and figures marked thereon, which form part of this specification.

My invention relates to that class of stores in which the heat and smoke pass over the top of the oven, down behind, and to the front beneath the same, before passing out at the pipe or flue; and it consists in so constructing the oven-doors that the heat and smoke are caused to pass from the front of the stove, and beneath the oven, back to the flue or pipe, through ach'amber or passage in the said oven-doors, instead of passing back through a flue beneath the even, as is the case in stoves of the ordinary construction.

By this means a much more uniform degree of heat in the oven is obtained, and a great economy in fuel is effected, as thciheat entirely'surrounds the oven on all sides, instead of passing over, behind, and beneath the oven only. i

To enable those skilled in the art to understand how to construct and use my said invention, I'will proceed to describe the same with particularity, making reference, in so doing, to the aforesaid drawings, in which- -Fig'1 ire 1 is a side elevation of my invention.

Figure 2 is a transverse section thereof, at the line x in fig. 1'. Figure 3 is a longitudinal vertical section through the centre; and Figure 4 is a detailed side view of the device, whereby the flues in the oven-doors are opened by the closing of'said doors.

Similar letters of reference in the several figures denote the same parts of my invention. I

A represents the doors of the oven E, which are made of double plates, leaving a space between of suitable width, as clearly seen .in fig. 2, and are hinged at b by any suitable hinge, and at B means of a hollow tube or pipe, connecting with the chamber in the doors, which turns in ajournal in the transverse passage 0, at the rear of the stove, with which the pipe of the stove is connected, thus forming an uninterrupted passage from the chamber in-the doors to the stove-pipe, whether the oven-doors be opened or closed.

It will be observed that the front part of the ovcn-doors overlaps upon the sides of the stove, so that the inner plates of the doors li'e close against the sides of the stove at that point, for the purposes hereinafter stated.

Upon each side of the stove are openings, 0 c, which are closed by hinged or movable dampers, e 0, so arranged as to close said openings 0 a when the oven-doors are open, but which are swung back so as to open said passages when the oven-doors arecloscd, by means of a projectiom g, upon the inside of said doors, as clearly shown in fig. 2. i i

There are, in the inner walls of said oven-doors, corresponding with said openings 0 a in the stove, openings did, to which are hinged or otherwise connected dampers or doors 1., which close said' openings (Z (I when the oven-doors are opened, but which open inward whenthe oven-doors are closed, thus forming a free communication between thespace beneath the oven'and the chambers in the oven-doors, whenever the said doors are closed.

In fig. 4 is represented a mode whereby the movement of the latch of the oven-door, in passing over the catch to secure the doors when closed, causes said dampers i to open,-as aforesaid.

The latch Zis pivoted to the door at m, and is formed in the shape shown, and provided with a fork or loop, 11, which strides a pimp, fixed upon the door or damper z', so that when the latch is depressed in passing beneath the catch it, the movement of the arm of said latch, which carries the device n, presses said device against thepin on the damper, and opens the same, as aforesaid, while the weight w, of the arm of the latch, immediately closes said damper when the door of the oven. is opened.

It is obvious that the opening of the dampers e and i by the closing of the oven-doors, and the closing of said dampers automatically upon the opening of said doors, may be efiected in various ways, and by the application of various mechanical devices, and I do not restrict myself to the peculiar devices or arrangements herein shown for that purpose; neither do I confine myself to the particular mode, herein described, of forming the continuous communication between the chambers in the oven-doors and the chamber 0 or the stove-pipe. I

By the construction herein described, it is seen that the heat, whether the oven-doors are open or closed, may pass directly into the flue or pipe, without passing beneath the oven, by simply opening the damper D,

which is effected by means of a rod, f.

But when said damper D is closed, and the even-doors are closed, the heat and smoke pass down behind and beneath the entire oven, the space behind and beneath being left entirely open and unobstructed, and-also pass up in front of the oven, below the fire-box, and thence go out through the passages 0 cl into the ovendoors upon either side, passing then through the hollow hinge B, and out of the flue or pipe, 7

To prevent the heat from passing directly from the inlet in the doors to the outlet, a vertical partition, indicated at a in fighl, is arranged in the chamber in the doors of the event, which retains the heat, and causes it to radiate fully and uniformly over the entire inner surface of the said doors before passing, as indicated by the arrows in said fig. 1, into the flue. e

Having described the nature, construction, and operation of my invention,.I will specify what I claim, and

desire to secure by Letters Patent.

I claim a stove, so. constructed that the heat and smoke may pass through a chamber, space, or flue in the doors of the oven, substantially as and for the purposes specified.

W. F. KISTLER. Witnesses:

G. W. GILLETT, W. E. Manes. 

